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improve blending error messages

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This commit is contained in:
GenevensiS
2026-05-07 11:34:15 +02:00
parent 9b51ca0537
commit d4efc5b973
15 changed files with 46 additions and 23 deletions
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src/gfx/blend_image.cpp
+8 -7
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@@ -19,7 +19,7 @@ template <typename T> inline T sqr(T x) { return x * x; }
void linear_blend(Image& img1, const Image& img2, double x1,double y1, double x2,double y2) {
int width = img1.GetWidth(), height = img1.GetHeight();
if (img2.GetWidth() != width || img2.GetHeight() != height) {
throw Error(_ERROR_1_("blending different sizes", "linear_blend"));
throw Error(_ERROR_3_("blending different sizes", "linear_blend", String()<<width<<_("x")<<height, String()<<img2.GetWidth()<<_("x")<<img2.GetHeight()));
}
const int fixed = 1<<16; // fixed point multiplier
@@ -82,10 +82,10 @@ void linear_blend(Image& img1, const Image& img2, double x1,double y1, double x2
void mask_blend(Image& img1, const Image& img2, const Image& mask) {
int width = img1.GetWidth(), height = img1.GetHeight();
if (img2.GetWidth() != width || img2.GetHeight() != height) {
throw Error(_("Images used for blending in masked_blend function must have the same size"));
throw Error(_ERROR_3_("blending different sizes", "masked_blend", String()<<width<<_("x")<<height, String()<<img2.GetWidth()<<_("x")<<img2.GetHeight()));
}
if (mask.GetWidth() != width || mask.GetHeight() != height) {
throw Error(_("Mask used for blending in masked_blend function must have the same size as the images"));
throw Error(_ERROR_3_("blending different mask", "masked_blend", String()<<width<<_("x")<<height, String()<<mask.GetWidth()<<_("x")<<mask.GetHeight()));
}
UInt size = width * height;
@@ -124,17 +124,18 @@ void set_alpha(Image& img, const Image& img_alpha) {
}
void set_alpha(Image& img, Byte* al, const wxSize& alpha_size) {
if (img.GetWidth() != alpha_size.GetWidth() || img.GetHeight() != alpha_size.GetHeight()) {
throw Error(_("Image must have same size as mask"));
int width = img.GetWidth(), height = img.GetHeight();
if (width != alpha_size.GetWidth() || height != alpha_size.GetHeight()) {
throw Error(_ERROR_3_("blending different mask", "set_alpha", String()<<width<<_("x")<<height, String()<<alpha_size.GetWidth()<<_("x")<<alpha_size.GetHeight()));
}
if (!img.HasAlpha()) {
// copy
img.InitAlpha();
memcpy(img.GetAlpha(), al, img.GetWidth() * img.GetHeight());
memcpy(img.GetAlpha(), al, width * height);
} else{
// merge
Byte *im = img.GetAlpha();
size_t size = img.GetWidth() * img.GetHeight();
size_t size = width * height;
for (size_t i = 0 ; i < size ; ++i) {
im[i] = (im[i] * al[i]) / 255;
}